Abstract
We have generated high harmonics by using the two-component laserablation plumes, which were irradiated by a femtosecond laser pulse. The harmonic spectra from double target schemes comprised those obtained from separate targets. For indium/chromium, the enhancement of two harmonics (13th and 29th harmonics) with conversion efficiencies of ~10-5was obtained at wavelengths of 61.15 and 27.41 nm, respectively. We attribute the enhancement of the 13th and 29th harmonics to the multiphoton resonances with the strong radiative transitions of ions in indium and chromium plumes, respectively. This study shows that the control of cutoff energy and intensity of single high harmonics can be achieved by using the appropriate target combination.
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Suzuki, M., Baba, M., Ganeev, R.A., Kuroda, H. (2011). High Harmonic Generation by using Laser-Ablation Two- Compounds Target Scheme. In: Lee, J., Nam, C.H., Janulewicz, K.A. (eds) X-Ray Lasers 2010. Springer Proceedings in Physics, vol 136. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-1186-0_25
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DOI: https://doi.org/10.1007/978-94-007-1186-0_25
Publisher Name: Springer, Dordrecht
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